单选题A lot of ants are always invading my kitchen. They are a thorough {{U}}pain in the neck{{/U}}.

单选题I have been trying to quit smoking.

单选题I felt Uimpelled /Uto tell the truth.

单选题Because of the strong sun Mrs. William new blue dining-room {{U}}curtains{{/U}} faded to gray within a year.

单选题We will take your recent illness into consideration when marking your exams.

单选题I can no longer tolerate his actions. A. put up with B. accept C. take D. suffer from

单选题A nurse is not qualified if she does not have patience and show concern for her patients.

单选题Light Night, Dark Stars Thousands of people around the globe step outside to gaze at their night sky. On a clear night, with no clouds, moonlight, or artificial lights to block the view, people can see more than 14,000 stars in the sky, says Dennis Ward, an astronomer with the University Corporation for Atmospheric Research (UCAR) in Boulder, Colo. But when people are surrounded by city lights, he says, they"re lucky to see 150 stars. If you"ve ever driven toward a big city at night and seen its glow from a great distance, you"ve witnessed light pollution. It occurs when light from streetlights, office buildings, signs, and other sources streams into space and illuminates the night sky. This haze of light makes many stars invisible to people on Earth. Even at night, big cities like New York glow from light pollution, making stargazing difficult. Dust and particles of pollution from factories and industries worsen the effects of light pollution. "If one city has a lot more light pollution than another," Ward says, "that city will suffer the effects of light pollution on a much greater scale." Hazy skies also make it far more difficult for astronomers to do their jobs. Cities are getting larger. Suburbs are growing in once dark, rural areas. Light from all this new development is increasingly obscuring the faint light given off by distant stars. And if scientists can"t locate these objects, they can"t learn more about them. Light pollution doesn"t only affect star visibility. It can harm wildlife too. It"s clear that artificial light can attract animals, making them go off course. There"s increasing evidence, for example, that migrating birds use sunsets and sunrises to help find their way, says Sydney Gauthreaux Jr., a scientist at Clemson University in South Carolina. "When light occurs at night," he says, "it has a very disruptive influence." Sometimes birds fly into lighted towers, high-rises, and cables from radio and television towers. Experts estimate that millions of birds die this way every year.

单选题Listening Device Provides Landslide Early Warning A device that provides early warning of a landslide by monitoring vibrations in soil is being tested by UK researchers. Tile device could save thousands of lives each year by warning when an area should be evacuated, the scientists say. Such natural disasters are common in countries that experience sudden, heavy rainfall, and can also be triggered by earthquakes and even water erosion. Landslides start when a few particles of soil or rock within a slope start to move,but the early stages can be hard to spot. Following this initial movement, "slopes can become, unstable in a matter of hours or minutes," says Nell Dixon at Loughborough University, UK. He says a warning system that monitors this movement "might be enough to evacuate a block of fiats or clear a road, and save lives." The most common way to monitor a slope for signs of an imminent landslide is to watch for changes in its shape. Surveyors can do this by measuring a site directly, or sensors sunk into boreholes or fixed above ground can be used to monitor the shape of a slope. Slopes can, however, change shape without triggering a landslide, so either method is prone to causing false alarms. Now Dixon"s team has developed a device that listens for the vibrations caused when particles begin moving within a slope. The device takes the form of a steel pipe dropped into a borehole in a slope. The borehole is filled in with gravel around the pipe to help transmit high-frequency vibrations generated by particles within the slope. These vibrations pass up the tube and are picked up by a sensor on the surface. Software analyses the vibration signal to determine whether a landslide may be imminent. The device is currently being tested in a 6-metre-tall artificial clay embankment in Newcastle, UK. Early results suggest it should provide fewer false positives than existing systems. Once it has been carefully and thoroughly tested, the device could be used to create a complete early-warning system for dangerous slopes. "Locations with a significant risk of landslides could definitely benefit from a machine like this," says Adam Poulter, an expert at the British Red Cross. "As long as it doesn"t cost too much." But, Poulter adds that an early-warning system may not be enough on its own. "You need to have the human communication," he says. "Making systems that get warnings to those who need them can be difficult."

单选题Sleepwalking (梦游) Not all sleep is the same every night. We experience some deep, quiet sleep and some active sleep, which is when dreams happen. You might think sleepwalking would happen during active sleep, but a person isn't physically active during active sleep. Sleepwalking usually happens in the first few hours of sleep in the stage called slow-wave or deep sleep. Not all sleepwalkers actually walk. Some simply sit up or stand in bed or act like they're awake when in fact, they're asleep! Most, however, do get up and move around for a few seconds or for as long as half an hour. Sleepwalkers' eyes are open, but they don't see the same way they do when they're awake and often think they're in different rooms of the house or different places altogether'. Sleepwalkers tend to go back to bed on their own and they won't remember it in the morning. Researchers estimate that about 15% of kids sleepwalk regularly. Sleepwalking may run in families (在家族中世代相传) and sometimes occurs when a person is sick, has a fever, is not getting enough sleep, or is stressed (紧张). If sleepwalking occurs frequently, every night or so, it's a good idea for your mom or dad to take you to see your doctor. But occasional sleepwalking generally isn't something to worry about, although it may look funny or even scary (骇人的) for the people who see a sleepwalker in action. Although occasional sleepwalking isn't a big deal, it's important, of course, that the person is kept safe. Precautions (预防措施) should be taken so the person is less likely to fall down, run into something, or walk out the front door while sleepwalking.

单选题Academic records from other institutions often become part of a university"s official file and can neither be returned to a student nor duplicated .

单选题It"s almost 5 o"clock, time to quit .

单选题 We all know there are times that kids seem to complain {{U}}(51) {{/U}} a stomach ache to get out of chores or going to school. Don't be so sure that the pain they {{U}}(52) {{/U}} is all in their minds. We're learning more now about a condition {{U}}(53) {{/U}} "functional abdominal pain" that is experienced by millions of kids every day. Like many teenagers, Kyle Brust makes it a point to do his homework as {{U}}(54) {{/U}} as he gets home. Unlike most, Kyle often did his with a terrible stomach ache. In fact, the {{U}}(55) {{/U}} often started while he was at school, but getting help there was getting harder. "Some of my teachers wouldn't let me go, because I'd asked so many times before and they thought I was trying to get out of {{U}}(56) {{/U}}," says Kyle. Kyle's morn Marilyn says she couldn't blame the {{U}}(57) {{/U}}. After all, she'd taken him to the doctor several times herself, and even they couldn't find anything {{U}}(58) {{/U}}. "You know, you're running the tests and nothing's coming up. So, is it in his head, is he just an extremely stressful child? It's just frustrating {{U}}(59) {{/U}} we're not finding any answers," says Marilyn. It turns out Kyle was suffering from a condition known {{U}}(60) {{/U}} functional abdominal pain, that affects as many as one out of every ten kids in this country. Even {{U}} (61) {{/U}} the cause of the pain may not be obvious, there are real consequences. "It really does hurt, and these kids really do suffer," says Dr. Campo, MD at Nationwide Children's Hospital. To help {{U}}(62) {{/U}}, Campo is looking into a new approach. He's conducting clinical trials of an antidepressant that changes the way the body handles a chemical called serotonin. In a preliminary study, Dr. Campo found that in about eight out of ten {{U}}(63) {{/U}}, the drug normally used to treat emotional pain worked to ease the pain in the {{U}}(64) {{/U}}. "We think about it as being important in anxiety and depression and that's all quite true, but what's really interesting is that 95% of our body's serotonin is in our gut, " says Campo. Campo believes these kids have extremely sensitive intestines, and controlling the effects of serotonin may {{U}}(65) {{/U}}ease the pain. It seemed to work for Kyle, who is now completely pain free for the first time in years.

单选题He {{U}}paused{{/U}} for a moment, then continued speaking.

单选题Things have changed a lot since I was a child.

单选题Too Polite for Words A Japanese colleague the other day was talking about a meeting with a man whom she abruptly described using the English word "jerk". I thought she was toning down her Japanese for my benefit, so I asked her how to say "jerk" in Japanese. "There's no such word," she answered helplessly. "We have to use 'jerk'". Heaven knows it's not as if there are no jerks in Japan. But the Japanese language is just not made for sniping at people. At first, I thought maybe my Japanese teachers had been too polite to teach me the real lingo, so I watched to see what Japanese drivers would say to each other after a car accident. It turned out that they say: "I'm sorry." Gradually I came to realize that there is perhaps no language so ill suited to invective as Japanese. Linguistically, these guys are wimps. Take the vicious Japanese insult "kisama," which is deeply offensive. It means . "your honorable self. "That's right. Instead of using all kinds of dirty words, the Japanese insult each other by frowning and growling: "Your honorable self." Likewise, a nasty expression for a woman is "ama," another term not to try with the nice woman at the sushi restaurant. But literally it means "nun". Sure, sarcasm may be intended, but still most women would probably prefer to be characterized as a nun than as a female dog. Since people are least inhibited when they are shaking their fists at each other, insults offer a window into a culture. I've been interested in such terms ever since I arrived in Cairo a dozen years ago to study Arabic and discovered that my name was a curse. "Nick" sounds very much like the imperative of an extremely vulgar verb for sex. I would introduce myself in Arabic, and my new acquaintance would flee in horror. There's no such danger in Japanese. There are explicit terms for sex and for body parts, crude as well as clinical, but they are descriptive rather than insulting. There is one exception. One of the meanest things one Japanese child can say to another is: "Omaeno kaachan debeso." That means: "Your mom's belly button sticks out." This has no deep Freudian meaning; it simply means that your mother is rude and ugly.

单选题 FDA: Human, Animal Waste Threatens Produce The biggest food safety risk for fresh fruits and vegetables as they are grown, picked or processed comes from human and animal waste, the US Food and Drug Administration (FDA) said Friday. More than 9,000 Americans die each year from food-borne diseases and some scientists believe fresh produce is the biggest carrier of contamination. The FDA issued a set of draft guidelines for US and foreign growers to carefully monitor worker hygiene, water quality, manure management and transportation. These 34-page draft guidelines urged growers to give workers lessons on basic hygiene such as using soap to wash their hands, coveting wounds that could come into contact with produce, and using only clean toilets. The FDA guidelines identified "the major source of contamination" for fresh produce as human or animal feces. "We think just proper controls and proper attention to detail would make a big difference in food safety," said an FDA official. "It is our belief that these guidelines would not be very costly." But grower groups disagreed with the FDA's assessment. "Most food-borne disease outbreaks that happen further down the distribution line are due to contamination because people preparing food are not properly washing their hands," said Stacey Zawal, an official with United Fresh Fruit and Vegetable Association. "That is not necessarily true for growers and packers." Some US grower organizations have expressed concern that the agency is interfering with on-farm practices. Others object to the FDA's proposal to have growers formally document the picking, handling and transportation of produce so that health officials could quickly recall foods if necessary. Consumer groups criticized the FDA guidelines as of little use because they will not carry the force of law. But stricter regulations could evolve as researchers find new technology or methods to kill harmful bacteria or parasites, the FDA said. The FDA recommendations are due to be made final by the FDA later this year for use by US and foreign growers. The matter of encouraging foreign growers to adopt the guidelines remains somewhat tricky but FDA officials say it is vital because of the huge amount of imported produce.

单选题It is possible to approach the problem in a different way.A. handleB. raiseC. poseD. experience

单选题Adds Jeanne Lambert, mother of Carey Graham: "Make the time, take the time, guide, lead, and encourage, If nothing else, your children learn you care, and that' s the most important lesson you can give them. " It is vital to let your children know you love and concern for them.A. RightB. WrongC. Not mentioned

单选题My mother wanted to die. but the doctors wouldn't let her. At least that's the way it seemed to me as I stood by her bed in an intensive - care unit at a hospital in Hilton Head, S. C. , five years ago. My mother was 79, a longtime smoker who was dying of emphysema (肺气肿). She knew that her quality of life was increasingly tethered to an oxygen tank, that she was losing her ability to get about, and that she was slowly drowning. The doctors at her bedside were recommending various tests and procedures to keep her alive, but my mother, with a certain firmness I recognized, said no. She seemed puzzled and a bit frustrated that she had to be so insistent on her own demise (死亡). "Tethered" in the paragraph can be best replaced byA. tied.B. enclosed.C. surrounded.D. belonge